693856 has 12 divisors (see below), whose sum is σ = 1366092. Its totient is φ = 346912.

The previous prime is 693851. The next prime is 693859. The reversal of 693856 is 658396.

It is a super-2 number, since 2×693856² = 962872297472, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10810 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (113841).

2⁶⁹³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

693856 is a deficient number, since it is larger than the sum of its proper divisors (672236).

693856 is a wasteful number, since it uses less digits than its factorization.

693856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21693 (or 21685 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 693856 is about 832.9801918413. The cubic root of 693856 is about 88.5298610757.

Adding to 693856 its product of digits (38880), we get a square (732736 = 856²).

The spelling of 693856 in words is "six hundred ninety-three thousand, eight hundred fifty-six".